Question

using your knowledge of cross products how would you solve for x in the following pair of equivalent fractions 7 over x equals 2/4

Answer 1

Use cross multiplication so you have

7/x = 2/4

multiple 7 and 4 to get 28 and multiply x and 2 to get 2x and set them equal to each other

so your new equation is 2x=28 and then you just need to solve for x

The answer is x=14